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- Body and femora completely black AND with elytra (measured at middle) longer than pronotum [photo]
- Last segment of labial palpus stout with its apical margin at a distinct angle [photo]
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- Not completely black OR with elytra, at middle, distinctly shorter than pronotum [photo]
- Last segment of labial palpus more elongate with its apical margin either truncate or pointed [photo]
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